Sheet for heat transfer printing and heat transfer printing method

Abstract

Abstract PURPOSE: To obtain sheet for thermal transfer printing with durability against light and heat, bright and uniform cyanic color by consisting of support with coating composed of specified water-insoluble dye. CONSTITUTION: A sheet for thermal transfer printing consists of a support with coating composed of water-insoluble dye shown with formula [I]. In the formula, R denotes a residue of active methylene compound and X represents a hydrogen atom, halogen atom or an optically substituted alkyl, aryl or heteroaryl radical. Y denotes a cyano, nitro, alkanoyl, aroyl, alkylsulfonyl, arylsulfonyl radical or a group of formulas: -COOR<1> or -CONR<2> R<3> wherein R<1> denotes hydrocarbyl radical and each of R<2> and R<3> expresses hydrogen atom or hydrocarbyl radical independently, and E denotes a residual radical of a coupling component. The dye of formula [I] has good thermal properties and the color depth of this dye is exactly proportional to heat consumed, a real gray scale of coloring can be obtained accordingly.

Inventors

• 👤 Guregorii Piitaa
• 👤 Buratsudobarii Roi
• 👤 Hasuton Mairitsuku Barii

Bibliographic Details